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MdeModulePkg/metafile: Add PCD PcdCpuStackGuard 

PcdCpuStackGuard is introduced to enable/disable Stack Guard feature.
Its value is FALSE by default. This feature is suggested to be enabled
only if the cpu driver and CpuExceptionHandlerLib have supported stack
switch for the processor used in platform. Otherwise the exception dump
message won't be printed out when there's a stack overflow happened.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Suggested-by: Ayellet Wolman <ayellet.wolman@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
Reviewed-by: Jiewen.yao@intel.com
This commit is contained in:
Jian J Wang 2017-10-12 12:28:47 +08:00 committed by Star Zeng
parent 621d1f45ad
commit 448d014b73
2 changed files with 14 additions and 0 deletions
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7
MdeModulePkg/MdeModulePkg.dec
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@ -949,6 +949,13 @@
# @Prompt The Heap Guard feature mask
gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask|0x0|UINT8|0x30001054
## Indicates if UEFI Stack Guard will be enabled.
# If enabled, stack overflow in UEFI can be caught, preventing chaotic consequences.<BR><BR>
# TRUE - UEFI Stack Guard will be enabled.<BR>
# FALSE - UEFI Stack Guard will be disabled.<BR>
# @Prompt Enable UEFI Stack Guard.
gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard|FALSE|BOOLEAN|0x30001055
[PcdsFixedAtBuild, PcdsPatchableInModule]
## Dynamic type PCD can be registered callback function for Pcd setting action.
# PcdMaxPeiPcdCallBackNumberPerPcdEntry indicates the maximum number of callback function

7
MdeModulePkg/MdeModulePkg.uni
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@ -1204,3 +1204,10 @@
" 0 - The returned pool is adjacent to the bottom guard page.<BR>\n"
" 1 - The returned pool is adjacent to the top guard page.<BR>"
#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdCpuStackGuard_PROMPT #language en-US "Enable UEFI Stack Guard"
#string STR_gEfiMdeModulePkgTokenSpaceGuid_PcdCpuStackGuard_HELP #language en-US "Indicates if UEFI Stack Guard will be enabled.\n"
" If enabled, stack overflow in UEFI can be caught, preventing chaotic consequences.<BR><BR>\n"
" TRUE - UEFI Stack Guard will be enabled.<BR>\n"
" FALSE - UEFI Stack Guard will be disabled.<BR>"